用于疼痛治疗的药物包括（）
A.非甾体类抗炎药
B.阿片类药
C.抗癫痫药
D.抗抑郁药
E.以上都是
参考答案：E
Mr. Brown knows little Japanese，so he can't understand the ________ on the bottle of the pills.
A．explanations
B．instructions
C．suggestions
D．introductions
